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Mass Transfer

Mass Transfer
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

Natural
None of these
Forced
Induced

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Mass Transfer
COâ‚‚ can be absorbed by

Hot cupric oxide
Heated charcoal
Alumina
Cold Ca(OH)â‚‚

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Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

70-80
44119
90-100
30-40

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Mass Transfer
L/mG is the expression for

Brinkman number
Slope of operating line in absorber
Slope of operating line in stripper
Absorption factor

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Mass Transfer
In distillation, overhead product contains

Only saturated liquid
Any number of components
Only one component
Two components

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Mass Transfer
For the same process conditions, the reflux ratio of an unlagged distillation column

Increases in summer
None of these
Decreases in winter
Increases in winter

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